TH320/TH420
Programmers Guide
1
Printer Status and Indicators
The TH320/TH420 printers perform a number of diagnostics that provide useful information about the
operating status of the printers. The following diagnostic tests are available.
Startup diagnostics
Performed during the printer’s startup cycle.
Runtime diagnostics
Performed during normal printer operation.
Remote diagnostics
Maintained during normal operation and reported in the print test.
The printer can be configured with the following settings and functions through the configuration
menu that is printed on the receipt. For more information on configuring the printer, see TH320 and
TH420 User Guides “Printer configuration”.
Communication interfaces Diagnostic modes
RS-232c settings
Printer emulations/software options
Hardware options
Startup diagnostics
When the printer receives power or performs a hardware reset, it automatically performs the startup
diagnostics (also known as level 0 diagnostics) during the startup cycle. The following diagnostics are
performed:
Turn off motors and solenoids.
Perform boot CRC check of the firmware ROM, test external SRAM, test EEPROM, and test main
program CRC. Failure causes Startup Diagnostics to stop; the printer beeps and the light flashes a
set number of times, indicating the nature of the failure. The table in the “Indicators” section (page
16) describes the specific tone and light sequences.
Check if paper is present.
Return the knife to the home position.
Failure causes a fault condition. The table in the “Indicators” section (page 16) describes the specific
tone and light sequences.
Check if receipt cover is closed
Failure does not interrupt the startup cycle.
When the startup diagnostics are complete, the printer makes a two-tone beep (low then high
frequency), the paper feed button is enabled, and the printer is ready for normal operation.
If the printer has not been turned on before, or a new EEPROM has been installed, the default values
for the printer functions will be loaded into the EEPROM during startup diagnostics.
Runtime Diagnostics
Runtime diagnostics (sometimes called level 2 diagnostics) run during normal printer operation. When the
following conditions occur, the printer automatically turns off the appropriate motors and disables
printing to prevent damage to the printer:
Paper out
Receipt cover open
Knife unable to home
Print head too hot
Voltages out of range
The light on the operator panel will signal when these conditions occur as well as indicate what state or
mode the printer is in.
Summary of Contents for TH320
Page 1: ...TH320 TH420 Two Color Thermal Impact Hybrid Printer Programmers Guide ...
Page 75: ...TH320 TH420 Programmers Guide 67 ...
Page 121: ...TH320 TH420 Programmers Guide 113 Character Sets Character code 437 USA Standard Europe ...
Page 122: ...Programmers Guide TH320 420 114 Codepage 737 Greek ...
Page 123: ...TH320 TH420 Programmers Guide 115 Codepage 850 Multilingual ...
Page 124: ...Programmers Guide TH320 420 116 Codepage 852 Slavic ...
Page 125: ...TH320 TH420 Programmers Guide 117 Codepage 857 Turkish ...
Page 126: ...Programmers Guide TH320 420 118 Codepage 858 with Euro symbol ...
Page 127: ...TH320 TH420 Programmers Guide 119 Codepage 860 Portuguese ...
Page 128: ...Programmers Guide TH320 420 120 Codepage 862 Hebrew ...
Page 129: ...TH320 TH420 Programmers Guide 121 Codepage 863 French Canadian ...
Page 130: ...Programmers Guide TH320 420 122 Codepage 865 Nordic ...
Page 131: ...TH320 TH420 Programmers Guide 123 Codepage 866 Cyrillic ...
Page 132: ...Programmers Guide TH320 420 124 Codepage 1252 Windows Latin 1 ...
Page 134: ...Programmers Guide TH320 420 126 Codepage 1255 Hebrew ...
Page 142: ...Programmers Guide TH320 420 134 TH420 Additional Features ...
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Page 157: ...TH320 TH420 Programmers Guide Wincor Nixdorf International GmbH D 33094 Paderborn ...